4-(1H-Imidazol-1-yl)aniline
4-(1H-Imidazol-1-yl)aniline (CAS 2221-00-3), with the molecular formula C9H9N3 and a molecular weight of 159.19 g/mol, is a heterocyclic building block. It serves as a key intermediate in chemical synthesis, particularly within organic and medicinal chemistry. Its structure, featuring both an aniline and an imidazole moiety, makes it valuable for constructing more complex molecular architectures.
- IUPAC
- 1-(4-Aminophenyl)-1H-imidazole
- Synonyms
- 1-(4-Aminophenyl)-1H-imidazole

Pharmaceutical Intermediate
This compound is utilized in the synthesis of active pharmaceutical ingredients (APIs). Its structure is amenable to further functionalization for the development of novel therapeutic agents.
Organic Synthesis Reagent
As a versatile building block, it facilitates the introduction of the 4-aminophenylimidazole fragment into various organic molecules. It is employed in multi-step synthesis pathways.
Material Science Research
The unique electronic properties conferred by the imidazole and aniline groups may find application in the development of advanced materials or functional polymers.
| Molecular weight | 159.19 |
|---|---|
| Empirical formula | C9H9N3 |
| Assay | 98% |
| Melting point | 143-147 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-(1H-Imidazol-1-yl)aniline used for?
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4-(1H-Imidazol-1-yl)aniline is primarily used as a chemical intermediate in organic synthesis, particularly for the development of pharmaceuticals and advanced materials.
What are the CAS number and formula for 4-(1H-Imidazol-1-yl)aniline?
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The CAS number for 4-(1H-Imidazol-1-yl)aniline is 2221-00-3, and its molecular formula is C9H9N3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-(1H-Imidazol-1-yl)aniline with a minimum assay of 98%. We do not represent this product as meeting USP, EP, or BP pharmacopoeial standards.
How should 4-(1H-Imidazol-1-yl)aniline be handled safely?
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Handling requires appropriate personal protective equipment, including a dust mask (type N95 or equivalent), eyeshields, and gloves. Avoid breathing dust. In case of contact, follow the provided safety statements and precautionary measures.
Is 4-(1H-Imidazol-1-yl)aniline a controlled substance?
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The provided data does not indicate that 4-(1H-Imidazol-1-yl)aniline is a controlled substance.
How is 4-(1H-Imidazol-1-yl)aniline packed, shipped, and exported?
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Tech Serve Solutions packs, ships, and exports chemicals in compliance with all relevant regulations, ensuring safe and secure transit for research and industrial applications.
How can I request a quote or sample for 4-(1H-Imidazol-1-yl)aniline?
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To request a quote or sample, please visit our website or contact our sales department directly, providing the product name and CAS number.
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